Tape-controlled measuring-pump.



J. ALBREGHT.

TAPE GONTROLLED MEASURING PUMP.

APPLICATION I'I'LBD DBO. 27, 1909. 968,827. Patented Aug. 3o, 1910.

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J. ALBRECHT.

TAPE GONTROLLED MEASURING PUMP.

APPLIOATION FILED 13,120.27, 1909.

968,827. Patented Aug. 30, 1910.

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J. ALBRECHT'. TAPE GONTEOLLBD MEASURING PUMP.

APPLICATION FILED DEO.27,19Q9. Patented Aug. 30, I 4SHEBTS-SHEBT 3.

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J. ALBREGHT.

TAPE' GONTROLLED MEASUBING PUMP.

APPLICATION PILElIJ DEO. 27, 1909.

Patented Aug. 30,1910.

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UNITED STATES PATENT OFFICE.

JOHN ALBRECHT, OF KEWAUNEE, WISCONSIN, ASSIGNOR TO THE .ALBRECI-IT MANU-FACTURING COMPANY, F KEWAUNEE, WISCONSIN, A CORPORATION 0F WIS- CONSIN.

TAPE-CONTROLLED MEASURING-PUMP.

Specification of Letters Patent.

Application led December 27, 1909.

To all whom it may concern:

Be it known that I, JOHN ALBRECHT, residing in Kewaunee, in the countyof Kewaunee and State of Wisconsin, have invented ne'w and usefulImprovements in Tape-Controlled Measuring-Pumps, of which the followingis a description, reference being had to the accompanying drawings,which are a part of this specification.

This invention has for its object to provide a measuring pump mechanismwhich may be controlled from a distance by a tape so as to accuratelydetermine the amount of skim milk or whey permitted to be pumped by thepatron of a creamery or cheese factory in partial exchange for wholemilk delivered by him, the amount of liquid drawn from the pump beingvaried at the will of the weigher so as to be proportionate to thequantity of whole milk received from the patron, and the pump becomingautomatically locked when the quantity which it has been set to deliverhas been drawn therefrom.

With the above and other objects in view the invention consists in thetape controlled measuring pump herein claimed, in the construction andrelative arrangement of certain parts and in combinations of partshereinafter particularly described and pointed out in the claims.

In the accompanying drawing is shown an exemplifying structure embodyingthe invention, but it is to be understood that the invention is capableof embodiment in different forms and of adaptation for various uses.

Referring to the accompanying drawings in which like characters ofreference indicate the same parts in the dierent views: Figure 1 is anelevation of a tape controlled measuring pump constructed in accordancewith this invention with the gage connected thereto; Fig. 2 is asectional plan View thereof; Fig. 3 is a sectional elevation of thelocking mechanism on the sectional plane of line 3 3 of Fig. 2; Fig. 4is a similar view on the plane of line 4 4 of Fig. 2; Fig. 5 is a viewsimilar to Fig. 4 on the plane of line 5-5 of Fig. 2; Fig. 6 is asimilar view on the irregular sectional plane of line 6-6 of Fig. 2;Fig. 7 is a view similar to Fig. 6 with parts sectioned on the plane ofline 7-7 of Fig. 2; and, Fig. 8 is a view similar to a part of Fig. 4,showing the parts in a position for setting the carriage by means of thetape.

In these drawings 10 indicates a pump proper mounted on a suitablepedestal 1l and having its top or cap portion 12 secured in place bymeans of bolts 13, the operating handle 14 being pivotally supported onsaid cap portion. The plunger rod 15 of the pump has securely fastenedto it a bracket arm 16 with preferably a brace connection 17 from itsoutwardly extended end to the upper end of the plunger rod 15 above theguide 17 for said plunger rod which is carried by the cap portion l2 ofthe pump.

The details of pump construction are not essential to the invention, butare briefly mentioned in order to show the locking connection of thecontrolling means therewith.

A base plate 19 is adjustably secured to the trunk portion of the pumppedestal 1I so as to stand at the desired elevation and at the properangle with relation to the pump parts for the support of the controllingmechanism which is contained within a box like frame 20 supported on thebase plate 19 by means of standards 21. A locking rod 22 passesvertically through the casing 20 and is guided in upper and lowerbearings formed in a frame 23, clearly shown in Figs. 6 and 7, formingan integral part of the supporting standards 21. At its upper end thelocking rod 22 carries a clamping member 24 for releasably clamping thebracket arm 16 0f the pump plunger rod to cause said locking rod to movein unison with the plunger rod. At its intermediate portion the lockingrod 22 is provided with engaging notches 25 on opposite sides thereof tobe engaged by a dog 26 on one side and a dog 27 on the other side, saiddogs being pivotally mounted on the frame 23 and the former extendingupwardly while the latter extends downwardly so as to eect a lockingengagement with the locking rod 22 that will prevent its movement ineither direction. A coil spring 28 serves to move dog 26 into itslocking engagement with the locking rod 22 while a spring 29 doeslikewise with dog 27. There are a pair of cross bars 30 extending acrossthe casing 20, and as here shown made integral therewith and bolted tothe frame 23, and a rod 31 pivotally connected tothe lower end of dog 27passes through a slot in the frame 23 and rests on the lower cross bar30 while the outwardly bent tail end of dog 26 also projects throughthis slot of the frame just above the rod 31.

A rocking frame is provided, which as shown in Fig. 3 consists of endpieces 32 connected by a cross piece 33, said end pieces at their lowerends being pivotally mounted on a rod 34 extending across the casing andhaving journaled in their upper ends a screw shaft 35 which isrestrained in its turning movements by means of a pair of leaf springs36 bearing on opposite sides thereof, said springs being mounted on thecross piece 33 as best shown in Fig. 6. A nut 37 is threaded on thescrew shaft 35 and has a projecting arm 38, Fig. 7, pivotally connectedin a slot of a swinging sliding plate or carriage 39 which s suspendedfrom a rod 40 extending across the casing. The lower end of the plate 39is bent inwardly to normally stand in the same vertical plane with theend of rod 31 and the tail end of dog 26 so as to engage therewith andbe prevented thereby against a lateral movement of the carriage to theleft of the position in which it is shown in Fig. 3. vWhen the swingingframe, however, is swung to its outer position, as shown in Fig. 5, thelower end of the plate 39 is free from engagement with the rod 31 andthe dog 26 so that said plate may be fed along the rod 40' by a turningmovement of the screw shaft 35. In order to produce the turning movementof the screw shaft 35, a strap 41, preferably of light spring metal, iscoiled around the screw shaft with its inner end secured thereto whileits outer end passes out through the casing into a narrow boX likeupright extension 42 of the casing where it passes beneath a leaf spring43 to keep it taut and then connects with a tape 44 eX- tending througha tubular conduit 45 which extends overhead for any desirable distanceto the location of the gage 46.

The pump mechanism is usually located Outside of the building while thegage is contained within the building at the position of the weigher.The gage comprises a vertical slotted guide in the slot of which arunner 47 slides carrying a pointer 48 to travel over lines ofgraduations marked on either side of the guide, one series indicatingthe position of the slide for measuring skim milk and the other seriesindicating the position of the slide for measuring whey and the numbersof graduation lines in each instance indicating the number of pounds ofwhole milk for which the proper quantity of whey or skim milk is to bedelivered. The tape 44 connects with the slide 47 so that as said slideis moved downwardly it draws the tape off of the screw shaft 35 turningsaid shaft to feed the carriage 39 by means of the engagement of its nut37 with the threads of said shaft.

In order to produce the swinging movement of the rocking frame carryingthe screw shaft, to avoid the engagement of the plate 39 with the rod 31and the dog 26, and against the action of a spring 49 which holds saidframe in its inner position, a link 50 is secured to one of the endpieces 32 and passing through an opening in the casing eXtension 42,Fig. 8, connects with one arm of the bell crank lever 51, the other armof which has a cord 52, Fig. 1, extending from it through guides andpulleys on the tubular conductor 45 to a handle 53 suspended at thegage. lVhen the handle 53 is pulled by the weigher the rocking frame isswung from the position in which it is shown in Fig. 4 to the positionin which it is shown in Fig. 5.

The carriage 39 is set to an advanced position, first through itsdisengagement from .the dog 26 and the rod 31 by a pull on the handle53, and then driven by the turning movement of the screw shaft 35 causedby the pull on the tape 44 in the adjustment of the slide on the gage,and is then allowed to swing inwardly under the action of its spring 49by releasing handle 53, the engagement of its inner face with the dog 26and the rod31 causing both dogs 26 and 27 to be disengaged from thelocking rod 22 as shown in Fig. 7, and it is then returned to its normalposition by the operation of the pump.

The locking rod 22 has an arm 54, secured to its lower end and passingthrough a guide slot formed between oneof the standards 21 and a strip55 secured thereto, and such arm is connected by means of a link 56 withan arm 57 adjustably mounted on a lever 58 which is pivotally mounted ona stud 59 eX- tending from the frame 23. Said lever 58 also carries aseries of stepped pawls 60 to engage the teeth of a ratchet 61 looselymounted on the stud 59 and carrying a pinion 62 which in the innerposition of the rocking frame meshes with a pinion 63 on the screw shaft35. Vith the locking rod 22 disengaged by both dogs 26 and 27 the pumpis free to be operated in the usual manner, but each stroke of theplunger rod 15 thereof moves the locking rod 22 an equal distance andthrough the connection of the link 56 such movement is caused to imparta rotation to the ratchet wheel 61 through the stepped pawls 60 andcause the turning of the screw shaft 35 to move the carriage 39 towardits normal position and to rewind the tape 41 on said shaft. As soon asthe carriage 39 reaches its normal position, its end passing off fromthe ends of dog 26 and rod 31 permits them to spring outwardly and causethe rengagement of both dogs with the locking rod and thereby lock thepump against further operation. Inasmuch as the extent of the feed ofthe carriage in one direction is determined by the extent of movement ofthe slide 47 on the gage, the extent of operation of the pump permittedduring the return movement of the carriage until the pump is againlocked will be proportionate to such movement of the slide, so that thevolume of liquid issuing from the pump will be exactly measured. Thegraduations of the scale are so spaced that such volume will beproportionate to the quantity of whole milk indicated by the gage at thebeginning of the pumping operation.

From the foregoing the operation of the invention will be clearlyunderstood, the pump being normally locked against operation by theengagement of the dogs 26 and 27 with the locking rod 22 and only beingunlocked when the weigher first pulls upon the handle 53 to swing thecarriage 39 by means of the rocking frame beyond the plane of the dog 26and the rod 31, such movement being permitted by the pivotal connectionof the nut 37 with the carriage 39, and then the movement of the slide47 on the gage causing the unreeling of the tape 41 to turn the screwshaft 35 and feed the carriage a distance depending upon the extent ofmovement of the slide 47, the handle 53 on being released by the weigherpermitting the spring 49 to return the rocking frame to its normalposition and thereby disengage both dogs 26 and 27 from the locking rod22 by the lower end of the carriage 39 bearing against the end of dog 26and the end of rod 31. The pump being unlocked is capable of operationin the usual manner and the stroke of the pump handle, whether it is apartial stroke or a full stroke, serves to produce a correspondingmovement of the ratchet wheel 61 to turn the screw shaft in the oppositedirection from the direction in which it was turned by the tape 41, tofeed the carriage toward its normal position and to rewind the tape 41.Immediately upon the carriage reaching its normal position the dogs 26and 27 are released thereby and engage the locking rod 22 to preventfurther operation of the pump. This locking engagement of the lockingrod 22 may be performed at one of a number of places according to thepositions of the notches 25 therein.

In order to increase or diminish the quantity of liquid permitted to bepumped at the respective adjustments of the gage the arm 57 may bechanged in its position on the lever 58, and for material variationstherein the pinion 62 may be substituted by another of different size,the stud 59 being adjustably mounted on the frame for that purpose, asshown in Fig. 5.

For convenient access to the parts the casing is shown as provided witha downwardly swinging door 64 and oneside thereof is provided with ahinged door 65, both being secured by suitable locks to preventtampering with the interior and a rod 66, shown in Fig. 2 passes throughthe casing and is locked in position by the closing of door 65 with itsend entering a socket 67 in the cap 12 of the pump to prevent said capbeing lifted or turned from the cylinder of the pump for the purpose offreeing the arm 16 from the locking rod 22 and thereby permitting theoperation of the pump independent of the locking mechanism. Vhen,however, it is desired to clean the pump it is only necessary to unlockthe door 65 and withdraw the rod 66 from the socket 67, when the cap 12may be released from its clamping bolts 13 and the arm 16 may bedisengaged from the locking rod 22 by opening the clamp 24 and the capwith the plunger' may be removed from the cylinder of the pump.

I desire it to be understood that this invention is not limited to anyspecific form or arrangement of parts except in so far as suchlimitations are specied in the claims.

What I claim as my invention is;

1. The combination with a pump plunger of means for locking theplunger', a screw shaft by means of which said locking means is movedinto and out of its locking position, a driving connection for the screwshaft operated by the movements of the pump plunger, means fordisengaging the screw shaft from the driving means, and a tape woundaround the screw shaft and adapted to turn the same when drawn offtherefrom while the screw shaft is out of connection with the drivingmeans.

2. The combination with a pump plunger of a locking means for the pumpplunger, a sliding plate adapted to release the locking means, a rockingframe, a screw shaft carried thereby, a nut connected with the slidingplate and threaded on the screw shaft, a driving connection between thepump plunger and the screw shaft, means for swinging the locking frameto disengage the driving connection from the screw shaft, and a tapewound upon the screw shaft and adapted when unreeled therefrom at thetime the driving connection is disengaged to feed the sliding platealong the screw shaft a distance dependent upon the amount ofr tapedrawn off and thereby permit of a degree of pumping operation dependentupon the distance said plate is fed and through which it will bereturned by the pumping action through the driving connection to itsposition for releasing the locking means.

3. The combination with a pump plunger of a locking means for the pumpplunger, a swinging sliding plate adapted to release the locking means,a spring actuated rocking frame, a screw shaft carried thereby, a nutconnected with the Sliding plate and threaded on the screw shaft, adriving connection between the pump plunger and the screw shaft, meansfor swinging the rocking frame against the action of its spring todisengage the driving connection from the screw shaft and for swingingthe sliding plate out of the path of engagement with the locking means,and a tape wound upon the screw shaft and adapted when unreeledtherefrom at the time the driving connection is disengaged to feed thesliding plate along the screw shaft a distance dependent upon the amountof tape drawn off and thereby permit of a degree of pumping operationdependent upon the distance said plate is fed and through which it willbe returned by the pumping action through the driving connection to itsposition for releasing the locking means.

4. The combination with a pump plunger of a sliding locking rodconnected therewith and provided with engaging notches on opposite sidesthereof, a pair of dogs for engaging the notches in the locking rod, aswinging sliding plate, a spring retracted rocking frame, a screw shaftmounted in the rocking frame, a nut threaded on the screw shaft andpivotally connected with the sliding plate, a rod connected with one ofthe dogs and extending with the end of the other dog in a position to beengaged by the swinging plate when it is moved out of its normalposition, means for swinging the rocking frame against the action of itsspring to carry the sliding plate out of its plane of engagement withthe dog and the rod, a tape wound upon the screw shaft and adapted toturn the same when drawn therefrom for feeding the plate by means of thenut a distance corresponding to the length of tape drawn off, saidplate, when so adjusted and the means for swinging the rocking frame isreleased, serving to engage the dog and rod and thereby release the dogsfrom the locking rod, and a driving connection between the pump plungerand the screw shaft for turning the screw shaft and restoring thesliding plate to its normal position for locking the pump when apredetermined degree of operation of the pump has been made, dependingupon the length of travel of the sliding plate.

5. The combination with a pump plunger of means for locking the plunger,a screw shaft by means of which said locking means is moved into and outof its locking position, a driving connection for the screw shaftoperated by the movements of the pump plunger, means for disengaging thescrew shaft from the driving means, and a variable controlling means forturning the screw shaft when it is disengaged from the drivingconnection for determining the extent of operation of the pump permittedwhile the locking means is being moved to its lock-v ing position by theoperation of the pump.

6. In a measuring pump, a cylinder, a cap therefor, a plunger rodpassing through the cap, a locking means for the plunger rod containedwithin the casing, a locked door controlling access to the casing, and alocking pin passing through the casing and engaging the cap and held inposition by the locked door, whereby the removal of the cap from thecylinder of the pump is prevented.

7 A measuring pump, comprising a pump cylinder, a pedestal on which thecylinder is mounted, a plunger working in the cylinder having a plungerrod, a pump handle having connection with the plunger rod, an armintegral with the handle connection of the plunger rod, a casingsupported from the pump pedestal, a locking rod passing through thecasing and having releasable connection with the arm, and an adjustablelocking means contained within the casing for controlling the degree ofoperation of the pump.

8. The combination with a pump having a cylinder and a plunger and anoperating handle, of a casing connected with the pump, a locking rodslidable through the casing, an arm connecting the locking rod with theplunger rod of the pump, locking means within the casing to engage thelocking rod and prevent the operation of the pump, a swinging slidingplate within the casing for disengaging the locking means from thelocking rod, a spring retracted rocking frame within the casing, a screwshaft mounted thereon and having connection with the sliding plate forswinging and sliding the same, a bell crank lever pivotally mounted onthe casing and connected with the rocking frame for swinging it, aratchet driving connection within the casing connected to the lockingrod and comprising intermeshing pinions, one of which is mounted on thescrew shaft and meshes with the other in the normal position of therocking frame, a tape wound about the screw shaft for turning the samewhen it is drawn off therefrom, a tubular conduit for the tape extendingfrom the casing to a distance therefrom, a. graduated gage, a slidemount ed thereon and connected with the end of the tape, and aconnection from the bell crank lever to the gage for permitting theswinging of the rocking frame to be performed at a distance at whichdistance the tape may be operated to draw it off from the screw shaft toa measured extent.

1n testimony whereof, 1 atlix my signature, in presence of twowitnesses.

JOHN ALBRECHT. lVitnesses F. B. Kum-IL, Jos. Gr. WALEGKA.

